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If nC2 =10 what is the value of nP2 |
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Answer» Step-by-step explanation: Liya = x Raja = 2x Ages 5 years ago : Liya = (x - 5) Raja = (2x - 5) According to the QUESTION, Five years ago Raja's age was three times Liya's age \sf{\longrightarrow} \: (2x - 5) = 3(x - 5)⟶(2x−5)=3(x−5) \sf{\longrightarrow} \:2x - 5 = 3x - 15⟶2x−5=3x−15 \sf{\longrightarrow} \:2x - 3x = - 15 + 5⟶2x−3x=−15+5 \sf{\longrightarrow} \:x = 10⟶x=10 Liya's present age = 10 years ___________________ ★ Raja's present age = \sf{\longrightarrow} \:2(10)⟶2(10) \sf{\longrightarrow} \:20⟶20 Raja's present age = 20 years Therefore, Raja and Liya are 20 and 10 years old RESPECTIVELY. |
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